at unitedhealthcare insurance company, we understand that commitment. so does aarp, serving americans 50 and over for generations. so it's no surprise millions have chosen an aarp dicare supplement insurance plan, insured by unitedhealthcare insurance company. like all standardized medicare supplement plans, it helps cover some of what medicare doesn't pay. to find out more, call today. >>> welcome back. 36 minutes past the hour now. space travel is now officially a business. the first privately contracted resupply mission to the international space station will launch from cape canaveral tomorrow. space x corporation of california successfully demonstrated it could do the job back in may when it docked its spacecraft with the iss. now it has a $1.6 billion contract with nasa for a dozen of these cargo missions. >>> it sounds so simple. scooping up a small shol full of dirt physical you consider it's being done on mars by curiosity. this weekend, the space agency says it will try to activate curiosity's robotic arm to dig up martian scale. curiosity is